Does this neutron star have an accretion disk?

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Discussion Overview

The discussion revolves around the presence of an accretion disk around the neutron star IGR J11014-6103, exploring the nature of its jets and the mechanisms behind their formation. Participants examine various sources and theories related to this neutron star, including its classification and the implications of its observed characteristics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants note that IGR J11014-6103 is not classified as an Accreting Millisecond X-Ray Pulsar (AMXP) and question the existence of an accretion disk.
  • Others suggest that the jets observed are produced by a rapidly rotating, highly magnetized neutron star, without confirming the presence of an accretion disk.
  • There is mention of the helical pattern of the jets and the bow-shock effect due to the star's supersonic velocity, but the origin of the material in the jets remains unclear.
  • One participant speculates that the neutron star may be a young star that has not been obscured by explosion debris or an accretion cloud, proposing that the jets could originate directly from the star itself.
  • There is a reference to an unclear theory regarding "rotation powered" jets, suggesting a mechanism where a spinning magnetic field may draw material from the poles at high velocities.

Areas of Agreement / Disagreement

Participants express differing views on the existence of an accretion disk and the origins of the jet material, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Participants acknowledge limitations in the current models and observations, suggesting that there may be missing information or a lack of understanding regarding the neutron star's nature.

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Last edited by a moderator:
|Glitch| said:
There are 15 known Accreting Millisecond X-Ray Pulsars (AMXPs), and IGR J11014-6103 is not among them. Other sources suggest that the jets are the result of a rapidly rotating highly magnetic pulsar, but make no mention of an accretion disk.
Sources:
The long helical jet of the Lighthouse nebula, IGR J11014-6103 - Astronomy & Astrophysics, Volume 562, February 2014 (free access)
A closer view of the IGR J11014-6103 outflows - arXiv 1511.01944 (free reprint)/QUOTE]

Thank you. Does your third link work?

Where does the material in this jet originate from - the neutron star itself?
 
Last edited by a moderator:
They make no mention of where the material for the jets originate, only that it is being generated by a rapidly rotating and highly magnetized neutron star. They have been able to confirm the helical pattern of the jets, and the trailing material perpendicular to the jets are the result of the bow-shock due to the star's supersonic velocity, but they fall short of stating whether or not the neutron star has an accretion disk. Considering they are not able to fully reproduce their observations in the models they have created suggests that they are either missing information, do not completely understand the nature of this neutron star, or both.

I'm not sure what happened with the last URL I posted. Here it is again:

A closer view of the IGR J11014-6103 outflows - arXiv 1511.01944 (free reprint)
 
|Glitch| said:
They make no mention of where the material for the jets originate, only that it is being generated by a rapidly rotating and highly magnetized neutron star. They have been able to confirm the helical pattern of the jets, and the trailing material perpendicular to the jets are the result of the bow-shock due to the star's supersonic velocity, but they fall short of stating whether or not the neutron star has an accretion disk. Considering they are not able to fully reproduce their observations in the models they have created suggests that they are either missing information, do not completely understand the nature of this neutron star, or both.

Maybe it’s a not untypical young neutron star that is a good observation candidate because its not obscured by explosion debris or an accretion cloud. Likely its had the jet since it was formed, and if there is no accretion cloud it means the jet material is coming directly from the star: There’s an unclear theory about “rotation powered” jets that doesn’t make great sense …… somehow a spinning magnetic field is supposed to suck up material from the poles at >0.8c?
 

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